an unpleasant and complicated situation that is difficult to escape from 困境；陷阱 a morass of lies and deceit 谎言和欺骗的泥潭 We got bogged down in a morass of detail and bureaucratic red tape. 我们陷入了细节和官僚繁文缛节的泥潭。
a dangerous area of low soft, wet land 沼泽
Word Originlate 15th cent.: from Dutch moeras, alteration (by assimilation to moer ‘moor’) of Middle Dutch marasch, from Old French marais ‘marsh’, from medieval Latin mariscus.